package com.lagou.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringUtil implements ApplicationContextAware {
  private static ApplicationContext applicationContext;
  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    if(SpringUtil.applicationContext == null) {
      SpringUtil.applicationContext = applicationContext;
    } 
  } 
  public static ApplicationContext getApplicationContext() {
    return applicationContext; 
  } 
  public static Object getBean(String name){ 
    return getApplicationContext().getBean(name); 
  } 
  public static <T> T getBean(Class<T> clazz){ 
    return getApplicationContext().getBean(clazz); 
  } 
  public static <T> T getBean(String name,Class<T> clazz){
    return getApplicationContext().getBean(name, clazz); 
  }


}